There is only one reason why some people keep pictures of their memories of the past like parents would certainly keep their baby’s pictures on a baby memory book. Students will keep their school pictures with classmates and special events and occasion photos on a school memory book. All of these have come up with only one reason, to take a look of the past. It is to remember the memories that they have during the past.
People nowadays love to take pictures and keep it on a memory book or photo album. And even a child would probably want to bring their memory book in his/her child backpacks and show it to his/her friends. It is only a proof that people are fond of keeping their memories like happy memories and sad memories. There is nothing wrong looking at the past. It is more like looking from were you have been before.